Home
Class 11
PHYSICS
If the sum of two unit vectors is a unit...

If the sum of two unit vectors is a unit vector, then magnitude of difference is-

A

`sqrt(2)`

B

`sqr(3)`

C

`1//sqrt(2)`

D

`sqrt(5)`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Sum of two unit vectors is a unit vector means angle between those two unit vectors is `120^(@)`
`therefore |S|=sqrt(1+1-2xx1xx1xxcos120^(@))=sqrt(3)`
Promotional Banner

Topper's Solved these Questions

  • BASIC MATHEMATICS

    DC PANDEY|Exercise Exercise|13 Videos

  • CALORIMETRY & HEAT TRANSFER

    DC PANDEY|Exercise Level 2 Subjective|14 Videos